vm/factor.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 VM_C_API void default_parameters(vm_parameters *p)
   7 {
   8         p->image_path = NULL;
   9
  10         /* We make a wild guess here that if we're running on ARM, we don't
  11         have a lot of memory. */
  12 #ifdef FACTOR_ARM
  13         p->ds_size = 8 * sizeof(cell);
  14         p->rs_size = 8 * sizeof(cell);
  15
  16         p->gen_count = 2;
  17         p->code_size = 4;
  18         p->young_size = 1;
  19         p->aging_size = 1;
  20         p->tenured_size = 6;
  21 #else
  22         p->ds_size = 32 * sizeof(cell);
  23         p->rs_size = 32 * sizeof(cell);
  24
  25         p->gen_count = 3;
  26         p->code_size = 8 * sizeof(cell);
  27         p->young_size = sizeof(cell) / 4;
  28         p->aging_size = sizeof(cell) / 2;
  29         p->tenured_size = 4 * sizeof(cell);
  30 #endif
  31
  32         p->max_pic_size = 3;
  33
  34         p->secure_gc = false;
  35         p->fep = false;
  36
  37 #ifdef WINDOWS
  38         p->console = false;
  39 #else
  40         p->console = true;
  41 #endif
  42
  43         p->stack_traces = true;
  44 }
  45
  46 static bool factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  47 {
  48         int val;
  49         if(SSCANF(str,arg,&val) > 0)
  50         {
  51                 *value = val;
  52                 return true;
  53         }
  54         else
  55                 return false;
  56 }
  57
  58 VM_C_API void init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  59 {
  60         default_parameters(p);
  61         p->executable_path = argv[0];
  62
  63         int i = 0;
  64
  65         for(i = 1; i < argc; i++)
  66         {
  67                 if(factor_arg(argv[i],STRING_LITERAL("-datastack=%d"),&p->ds_size));
  68                 else if(factor_arg(argv[i],STRING_LITERAL("-retainstack=%d"),&p->rs_size));
  69                 else if(factor_arg(argv[i],STRING_LITERAL("-generations=%d"),&p->gen_count));
  70                 else if(factor_arg(argv[i],STRING_LITERAL("-young=%d"),&p->young_size));
  71                 else if(factor_arg(argv[i],STRING_LITERAL("-aging=%d"),&p->aging_size));
  72                 else if(factor_arg(argv[i],STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  73                 else if(factor_arg(argv[i],STRING_LITERAL("-codeheap=%d"),&p->code_size));
  74                 else if(factor_arg(argv[i],STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  75                 else if(STRCMP(argv[i],STRING_LITERAL("-securegc")) == 0) p->secure_gc = true;
  76                 else if(STRCMP(argv[i],STRING_LITERAL("-fep")) == 0) p->fep = true;
  77                 else if(STRNCMP(argv[i],STRING_LITERAL("-i="),3) == 0) p->image_path = argv[i] + 3;
  78                 else if(STRCMP(argv[i],STRING_LITERAL("-console")) == 0) p->console = true;
  79                 else if(STRCMP(argv[i],STRING_LITERAL("-no-stack-traces")) == 0) p->stack_traces = false;
  80         }
  81 }
  82
  83 /* Do some initialization that we do once only */
  84 static void do_stage1_init()
  85 {
  86         print_string("*** Stage 2 early init... ");
  87         fflush(stdout);
  88
  89         compile_all_words();
  90         userenv[STAGE2_ENV] = T;
  91
  92         print_string("done\n");
  93         fflush(stdout);
  94 }
  95
  96 VM_C_API void init_factor(vm_parameters *p)
  97 {
  98         /* Kilobytes */
  99         p->ds_size = align_page(p->ds_size << 10);
 100         p->rs_size = align_page(p->rs_size << 10);
 101
 102         /* Megabytes */
 103         p->young_size <<= 20;
 104         p->aging_size <<= 20;
 105         p->tenured_size <<= 20;
 106         p->code_size <<= 20;
 107
 108         /* Disable GC during init as a sanity check */
 109         gc_off = true;
 110
 111         /* OS-specific initialization */
 112         early_init();
 113
 114         const vm_char *executable_path = vm_executable_path();
 115
 116         if(executable_path)
 117                 p->executable_path = executable_path;
 118
 119         if(p->image_path == NULL)
 120                 p->image_path = default_image_path();
 121
 122         srand(current_micros());
 123         init_ffi();
 124         init_stacks(p->ds_size,p->rs_size);
 125         load_image(p);
 126         init_c_io();
 127         init_inline_caching(p->max_pic_size);
 128         init_signals();
 129
 130         if(p->console)
 131                 open_console();
 132
 133         init_profiler();
 134
 135         userenv[CPU_ENV] = allot_alien(F,(cell)FACTOR_CPU_STRING);
 136         userenv[OS_ENV] = allot_alien(F,(cell)FACTOR_OS_STRING);
 137         userenv[CELL_SIZE_ENV] = tag_fixnum(sizeof(cell));
 138         userenv[EXECUTABLE_ENV] = allot_alien(F,(cell)p->executable_path);
 139         userenv[ARGS_ENV] = F;
 140         userenv[EMBEDDED_ENV] = F;
 141
 142         /* We can GC now */
 143         gc_off = false;
 144
 145         if(userenv[STAGE2_ENV] == F)
 146         {
 147                 userenv[STACK_TRACES_ENV] = tag_boolean(p->stack_traces);
 148                 do_stage1_init();
 149         }
 150 }
 151
 152 /* May allocate memory */
 153 VM_C_API void pass_args_to_factor(int argc, vm_char **argv)
 154 {
 155         growable_array args;
 156         int i;
 157
 158         for(i = 1; i < argc; i++)
 159                 args.add(allot_alien(F,(cell)argv[i]));
 160
 161         args.trim();
 162         userenv[ARGS_ENV] = args.elements.value();
 163 }
 164
 165 static void start_factor(vm_parameters *p)
 166 {
 167         if(p->fep) factorbug();
 168
 169         nest_stacks();
 170         c_to_factor_toplevel(userenv[BOOT_ENV]);
 171         unnest_stacks();
 172 }
 173
 174 VM_C_API void start_embedded_factor(vm_parameters *p)
 175 {
 176         userenv[EMBEDDED_ENV] = T;
 177         start_factor(p);
 178 }
 179
 180 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 181 {
 182         vm_parameters p;
 183         default_parameters(&p);
 184         init_parameters_from_args(&p,argc,argv);
 185         init_factor(&p);
 186         pass_args_to_factor(argc,argv);
 187         start_factor(&p);
 188 }
 189
 190 VM_C_API char *factor_eval_string(char *string)
 191 {
 192         char *(*callback)(char *) = (char *(*)(char *))alien_offset(userenv[EVAL_CALLBACK_ENV]);
 193         return callback(string);
 194 }
 195
 196 VM_C_API void factor_eval_free(char *result)
 197 {
 198         free(result);
 199 }
 200
 201 VM_C_API void factor_yield()
 202 {
 203         void (*callback)() = (void (*)())alien_offset(userenv[YIELD_CALLBACK_ENV]);
 204         callback();
 205 }
 206
 207 VM_C_API void factor_sleep(long us)
 208 {
 209         void (*callback)(long) = (void (*)(long))alien_offset(userenv[SLEEP_CALLBACK_ENV]);
 210         callback(us);
 211 }
 212
 213 }